1 ! Copyright (C) 2009 Joe Groff.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors alien alien.c-types alien.data arrays byte-arrays
4 combinators destructors gpu kernel math opengl opengl.gl
5 typed ui.gadgets.worlds variants ;
8 VARIANT: buffer-upload-pattern
9 stream-upload static-upload dynamic-upload ;
11 VARIANT: buffer-usage-pattern
12 draw-usage read-usage copy-usage ;
14 VARIANT: buffer-access-mode
15 read-access write-access read-write-access ;
18 vertex-buffer index-buffer
19 pixel-unpack-buffer pixel-pack-buffer
20 transform-feedback-buffer ;
22 TUPLE: buffer < gpu-object
23 { upload-pattern buffer-upload-pattern }
24 { usage-pattern buffer-usage-pattern }
25 { kind buffer-kind } ;
29 : gl-buffer-usage ( buffer -- usage )
30 [ upload-pattern>> ] [ usage-pattern>> ] bi 2array {
31 { { stream-upload draw-usage } [ GL_STREAM_DRAW ] }
32 { { stream-upload read-usage } [ GL_STREAM_READ ] }
33 { { stream-upload copy-usage } [ GL_STREAM_COPY ] }
35 { { static-upload draw-usage } [ GL_STATIC_DRAW ] }
36 { { static-upload read-usage } [ GL_STATIC_READ ] }
37 { { static-upload copy-usage } [ GL_STATIC_COPY ] }
39 { { dynamic-upload draw-usage } [ GL_DYNAMIC_DRAW ] }
40 { { dynamic-upload read-usage } [ GL_DYNAMIC_READ ] }
41 { { dynamic-upload copy-usage } [ GL_DYNAMIC_COPY ] }
44 : gl-access ( access -- gl-access )
46 { read-access [ GL_READ_ONLY ] }
47 { write-access [ GL_WRITE_ONLY ] }
48 { read-write-access [ GL_READ_WRITE ] }
51 : gl-target ( kind -- target )
53 { vertex-buffer [ GL_ARRAY_BUFFER ] }
54 { index-buffer [ GL_ELEMENT_ARRAY_BUFFER ] }
55 { pixel-unpack-buffer [ GL_PIXEL_UNPACK_BUFFER ] }
56 { pixel-pack-buffer [ GL_PIXEL_PACK_BUFFER ] }
57 { transform-feedback-buffer [ GL_TRANSFORM_FEEDBACK_BUFFER ] }
60 : get-buffer-int ( target enum -- value )
61 0 int <ref> [ glGetBufferParameteriv ] keep int deref ; inline
63 : bind-buffer ( buffer -- target )
64 [ kind>> gl-target dup ] [ handle>> glBindBuffer ] bi ; inline
69 [ [ delete-gl-buffer ] when* f ] change-handle drop ;
72 { buffer buffer read-only }
73 { offset integer read-only } ;
74 C: <buffer-ptr> buffer-ptr
76 TUPLE: buffer-range < buffer-ptr
77 { size integer read-only } ;
78 C: <buffer-range> buffer-range
80 UNION: gpu-data-ptr buffer-ptr c-ptr ;
82 TYPED: buffer-size ( buffer: buffer -- size: integer )
83 bind-buffer GL_BUFFER_SIZE get-buffer-int ;
85 : buffer-ptr>range ( buffer-ptr -- buffer-range )
86 [ buffer>> ] [ offset>> ] bi
87 2dup [ buffer-size ] dip -
88 buffer-range boa ; inline
90 :: allocate-buffer ( buffer size initial-data -- )
91 buffer bind-buffer :> target
92 target size initial-data buffer gl-buffer-usage glBufferData ; inline
94 : allocate-byte-array ( buffer byte-array -- )
95 [ byte-length ] [ ] bi allocate-buffer ; inline
97 TYPED: <buffer> ( upload: buffer-upload-pattern
98 usage: buffer-usage-pattern
104 [ [ gen-gl-buffer ] 3dip buffer boa dup ] 2dip allocate-buffer
107 TYPED: byte-array>buffer ( byte-array
108 upload: buffer-upload-pattern
109 usage: buffer-usage-pattern
114 [ byte-length ] [ ] bi <buffer> ;
116 TYPED:: update-buffer ( buffer-ptr: buffer-ptr size: integer data -- )
117 buffer-ptr buffer>> :> buffer
118 buffer bind-buffer :> target
119 target buffer-ptr offset>> size data glBufferSubData ;
121 TYPED:: read-buffer ( buffer-ptr: buffer-ptr size: integer -- data: byte-array )
122 buffer-ptr buffer>> :> buffer
123 buffer bind-buffer :> target
124 size <byte-array> :> data
125 target buffer-ptr offset>> size data glGetBufferSubData
128 TYPED:: copy-buffer ( to-buffer-ptr: buffer-ptr from-buffer-ptr: buffer-ptr size: integer -- )
129 GL_COPY_WRITE_BUFFER to-buffer-ptr buffer>> glBindBuffer
130 GL_COPY_READ_BUFFER from-buffer-ptr buffer>> glBindBuffer
132 GL_COPY_READ_BUFFER GL_COPY_WRITE_BUFFER
133 from-buffer-ptr offset>> to-buffer-ptr offset>>
134 size glCopyBufferSubData ;
136 : (grow-buffer-size) ( target-size old-size -- new-size )
137 [ 2dup > ] [ 2 * ] while nip ; inline
139 TYPED: grow-buffer ( buffer: buffer target-size: integer -- )
140 over buffer-size 2dup >
141 [ (grow-buffer-size) f allocate-buffer ] [ 3drop ] if ; inline
143 :: with-mapped-buffer ( ..a buffer access quot: ( ..a alien -- ..b ) -- ..b )
144 buffer bind-buffer :> target
145 target access gl-access glMapBuffer
149 target glUnmapBuffer drop ; inline
151 :: with-mapped-buffer-array ( ..a buffer access c-type quot: ( ..a array -- ..b ) -- ..b )
152 buffer buffer-size c-type heap-size /i :> len
153 buffer access [ len c-type <c-direct-array> quot call ] with-mapped-buffer ; inline
155 :: with-bound-buffer ( ..a buffer target quot: ( ..a -- ..b ) -- ..b )
156 target gl-target buffer glBindBuffer
159 : with-buffer-ptr ( ..a buffer-ptr target quot: ( ..a c-ptr -- ..b ) -- ..b )
160 [ [ offset>> <alien> ] [ buffer>> handle>> ] bi ] 2dip
161 with-bound-buffer ; inline
163 : with-gpu-data-ptr ( ..a gpu-data-ptr target quot: ( ..a c-ptr -- ..b ) -- ..b )
166 [ [ gl-target 0 glBindBuffer ] dip call ] if ; inline